Messages in this thread | | | Date | Sun, 12 May 2002 17:56:40 +0200 (MET DST) | From | Mikael Pettersson <> | Subject | Re: [2.4.18] preemptible patch causing freeze |
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On Sun, 12 May 2002 16:29:11 +0200 (CEST), Pawel Kot wrote: >I was attempting to get new ntfs driver to work with your preemptible >patch in 2.4.18 kernel. I used 2.4.18 kernel with 2.4.18-4 preempt patch >and with or w/o ntfs 2.0.7b patch. The result was every time the same. >I use it on the Dell laptop with APM enabled (.config in the attachment) > >The problem is that when I unplug the power cable, the laptop freezes. It >freezes totally, but not oops or other error is generated. The problem >does not exist in 2.4.18 vanilla. >... ># CONFIG_SMP is not set >CONFIG_PREEMPT=y >CONFIG_X86_UP_APIC=y >CONFIG_X86_UP_IOAPIC=y
Are you sure you were using this exact .config without the CONFIG_PREEMPT=y in 2.4.18 vanilla? The problem is that recent Dell laptops with local APICs are known to have buggy BIOSen that cause exactly the kinds of problems you described (hangs at BIOS and power-management events).
2.4.19-pre8 has the necessary workarounds for Dell Inspiron and Latitude laptops. Alternatively, rebuild your kernel with SMP, UP_APIC, and UP_IOAPIC all disabled.
(If your Dell is old enough to not have a local APIC, then this is not the problem and you can ignore this message.)
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